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 ###Instrução: Qual é o g (μs/km) quando a frequência (hz) é 100k?
 ###Tabelas: CREATE TABLE characteristics_of_telephone_cable_as_a_function_of_frequency (characteristics_of_telephone_cable_as_a_function_of_frequency_id AUTO_INCREMENT PRIMARY KEY, Frequency (Hz) VARCHAR, R (Ω/km) VARCHAR, L (mH/km) VARCHAR, G (μS/km) VARCHAR, C (nF/km) VARCHAR) CREATE TABLE switzerland (switzerland_id AUTO_INCREMENT PRIMARY KEY, Internet Plan VARCHAR, Downstream VARCHAR, Upstream VARCHAR, Bandwidth Included VARCHAR, Price VARCHAR) CREATE TABLE prize_money_won (prize_money_won_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Group Legs won INT, Play-Off Legs won INT, Winners Group Legs won INT, Winners Play-Off Legs won INT, Final position money won* VARCHAR, Total money won VARCHAR) CREATE TABLE ladder_breakdown_by_opposition (ladder_breakdown_by_opposition_id AUTO_INCREMENT PRIMARY KEY, Opponent VARCHAR, Played INT, Won INT, Lost INT, Drew INT, Premiership points INT, Points for INT, Points against INT, Percentage (%) VARCHAR) CREATE TABLE scandinavia (scandinavia_id AUTO_INCREMENT PRIMARY KEY, Peak VARCHAR, Country VARCHAR, Elevation (m) INT, Prominence (m) INT, Col (m) INT)  
SELECT G (μS/km) FROM characteristics_of_telephone_cable_as_a_function_of_frequency WHERE Frequency (Hz) = 100k